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1.
Bol. Hosp. Univ. Caracas ; 22(2): 59-62, ene.-jun. 1992.
Article in Spanish | LILACS | ID: lil-148179

ABSTRACT

Desde diciembre de 1988, en 25 pacientes con cáncer de laringe, luego de estirpar el primario, coloreamos los bordes y toda la superficie mucosa de los tractos a ser reconstruidos, con azul de toluidina al 2 por ciento; lavándola, sin traumatizarla, antes y después de la tinción, con 2000 cc. de solución fisiológica. La exactitud de la interpretación macroscópica de este método, que representa 5 minutos de tiempo operatorio, fue del 100 por ciento frente al corte congelado; nos permitió "ver" que anastomosamos mucosas histológicamente sanas y prueba de ello ningún caso de segundo primario en 30 meses de control


Subject(s)
Laryngeal Neoplasms/surgery , Larynx/pathology , Toluidines/administration & dosage
2.
Braz. j. med. biol. res ; 22(10): 1291-3, 1989. tab
Article in English | LILACS | ID: lil-83392

ABSTRACT

Acute oral administration of the pesticide amitraz at the doses of 60 and 100 mg/kg (N = 10 per group) significantly decreased the rearing frequency of rats observed in a open field to 8 + or - 8 and 5 + or- 5, respectively, when compared to 28 + or - 5 for control rats treated with vehicle only. The same doses of amitraz (N = 10 per group) increased duration of immobility to 80 + or - 50 and 113 + or - 64 s, respectively, when compared to 113 + or - 64 s for the controls. Acute oral administration of amitraz (20, 60 or 100 mg/kg, N = 10 per group) significantly increased the convulsive threshold dose of rats for strychnine, picrotoxin and pentylenetetrazole. A mitraz administered ip to mice at the doses of 20, 60 and 100 mg/kg (N = 10 per group) significantly increased sleeping time in a dose-dependent manner to 96 + or - 26, 120 + or - 29 and 198 + or - 58 min, respectively, when compared to 45 + or - 15 min for control mice treated with vehicle only. These results indicate that amitraz produces a depressant effect on the central nervous system


Subject(s)
Rats , Animals , Male , Behavior, Animal/drug effects , Insecticides/pharmacology , Toluidines/pharmacology , Analysis of Variance , Central Nervous System/drug effects , Convulsants/pharmacology , Depression, Chemical , Insecticides/administration & dosage , Locomotion , Posture , Rats, Inbred Strains , Toluidines/administration & dosage
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